Automatic coal-feed and draft regulator.



W. C. KOELLING. AUTOMATIC COAL FEED AND DRAFT REGULATOR. APPLICATION FILED MAR. 24. I917.

Patented July 1.0, 1917.

2 SHEETS-SHEET1- W. KOELLING. I AUTOMATIC COAL FEED AND DRAFT REGULATOR.

APPLICATION FILED MAR. 24. I917.

Patented July 10, 1917.

2 SHEETSSHEET Z I glm -ucntoz WESLEY C. KOELLING, OF FREEPORT, KANSAS.

AUTOMATIC GOAL-FEED AND DRAFT REGULATOR.

Specification of Letters Patent.

Patented July to, 1917.

Application filed March 24, 1917. Serial No. 157,182.

To all whom it may concern Be it known that I, WESLEY C. KonLLING, a citizen of the United States, residing at Freeport, in the county of Harper and State of Kansas, have invented a new and useful Automatic Coal-Feed and Draft Regulator, of which the following is a specification.

This invention relates to an automatic coal feed and draft regulator, wherein means for operating a coal chute and draft door is held by time controlled detents which are adapted to be released at a predetermined time.

The objects of the invention are; first, to provide a coal chute adapted to be secured to the front of a furnace, and operative means for the slide of the chute and a draft of the furnace; second, to provide means to first actuate the chute slide and then automat-ically close the slide and open the draft; third, to provide detents for the chute slide and draft operative means which will be antomatically and consecutively released; and fourth, to provide a simple, cheap and eiiicient structure of the character set forth.

lVith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement ofparts and in the details of constructionhereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings Figure 1 is a front elevation of the de vice showing the same in place on a fiurnace and in operative position.

Fig. 2 is a similar view showing the position of the parts when the chute slide is raised.

Fig. 3 is a similar view showing the position of the parts when the chute slide has been reclosed and the draft opened.

Fig. 4 is a. horizontal cross section taken on the line 44 of Fig. 1.

Fig. 5 is a horizontal cross section taken on the line 55 of Fig. 3.

Referring to the drawings by numerals A door 1, having an opening 2, is hinged as indicated at 33 to the front of a furnace 4, and forms the main support for the device.

Supporting brackets 5 extend outwardly from each side of the door, adjacent the opening 2, and a similar bracket 5 extends outwardly from the bottom of the door 1 adjacent its opening. These brackets are preferably integral with the door and formed from the material out out to form the opening 2, which after being suitably out, is bent outwardly to form the brackets. Secured to the brackets 5 and 5, and passing through the opening 2, is a chute 6, which extends outwardly and upwardly from the door 1.

Secured to the door 1 at each side of the opening 2 is a vertically disposed arm 7 of an inverted substantially U -shaped plate, and interposed between each arm 7 and the door 1 is a spacing plate 8, which is of less width than the arm 7, so that the inner edge of arm 7 extends beyond the plate 8 and forms, with the door 1, a groove or channel. 9. A vertically reciprocating slide 10, has its side edges adapted to the grooves 9 and normally closes the opening2 of the door 1.

The upper portion 11, of the U-shaped plate, is offset to rest against the front of the, furnace 4, and secured thereto is a yoke 12, one arm of which extends downwardly at an angle, as seen at 13, and has its lower end secured to one arm 7. Pivoted in the yoke 12, and spaced from the cross member thereof, are sheaves 14 and 15, preferably mounted side by side.

Secured to the slide 10, is an eye 16, to which is attached one end of a cable 17 which passes over sheave 14, and after forming a loop 18, passes back over sheave 15, and has its end attached to a weight 19. A weight 20, which is formed with an eye 21 at each end thereof is secured at one end to the loop 18, at a proper point thereof, and has its other end connected, through a cable 22, to the usual draft door 23, which is hinged to the furnace near the bottom thereof. The cable 17, in passin from the eye 16 to sheave 14, is prefera 1y led over a guide pulley 24 which is pivotally secured to the upper portion 11 of the U-shaped late.

P Wedges 25 and 26, are provided, each having an eye 25' and 26', respectively, secured to one end thereof, and the wedges are connected by a cable 27 which is secured in each eye and the free end of which is secured to the shaft 28 of a clock 29. The wedge 26 is adapted to be inserted between the sheave 14, and the cross piece of the yoke 12, while the wedge 25 is adapted to be inserted between the sheave l5 and said cross piece.

The operation of the device is as follows :The weights 19 and 20 are drawn to the position shown in Fig. 1, and the wedges 25 and 26 inserted in place with sufiicient force to hold the weights. The clock is wound in the usual manner and the alarm mechanism wound through rotation of the shaft 28, and set to the desired time. When the desired hour arrives, the alarm'mechanism will be set in operation, causing a revolution of the shaft 28, which will wind the cable 27 and, first, remove the wedge 26. This will allow the weight 20 to drop and pull the cable, through strand 18 of loop 18, and raise the slide 10, the parts being in the positions shown in Fig. 2. This will permit coal, which had been previously placed in the chute, to be delivered to the furnace. Further revolution of the shaft 28, releases the wedge 25 and permits the weight 19 to drop. This causes a pull through the strand 18 of loop 18 on the weight 20, which being lighter than the weight 19, will be drawn upwardly, allowing the slide 10 to close and raising, through the cable 22, the draft door 23.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In an automatic fuel feed and draft control, a furnace, a fuel chute secured to the furnace, a slide in the fuel chute, a weight connected to the slide and operable to open the same, a weight secured to the first mentioned weight, and operable to raise the first mentioned weight and close the slide, detents for the weights, and means for successively and automatically releasing the detents.

2. In an automatic fuel feed and draft control, a furnace, a door hinged to the furnace, said door provided with an opening, a fuel chute secured to the door and extending through the opening, a slide mounted on the door and operable to open and close the opening, a yoke secured to the door, sheaves pivoted in the yoke, a cable secured to the slide and passing over thesheaves, a weight intermediate of the cable and operable to open the slide, another weight on the cable and operable to elevate the first mentioned weight and close the slide, a draft door for the furnace, a connection between the draft door and the first weight, detents for holding the weights in operative position, and 7 means for automatically and successively releasing the detents to drop the weights.

3. In an automatic fuel feed and draft control, a furnace, a door hinged to the furnace, said door provided with an opening, a fuel chute secured to the door to discharge through the opening, a guide plate on the door, a slide reciprocahle' in the guide plate and normally closing the opening of the door, a cable secured to the slide, aweight secured to the cable, means for retaining the weight in elevated position and automatically releasing the weight to open the slide, another weight secured to the cable, and means for actuating the second weight to elevate the first Weight and close the slide.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

WESLEY O. KOELLING,

copies of this patent may be obtained for live cents each, by addressing the Commissioner 01 intents,

Washington, D. C. 

